.xb-rails-note{max-width:68ch;margin:1rem 0 0;color:var(--text-secondary);font-size:var(--text-sm);line-height:1.6}.xb-rails-note a{color:var(--primary);text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--primary) 45%,transparent);text-underline-offset:3px}.xb-rails-note a:hover{text-decoration-color:currentColor}.xb-benefits{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:1.25rem}.xb-benefit{background:var(--ink-panel);border:1px solid var(--hairline);border-radius:16px;box-shadow:var(--shadow-sm);padding:1.35rem 1.35rem 1.5rem}.xb-benefit .k{margin:0;color:var(--text-primary);font:600 17px/1.35 var(--font-ui);letter-spacing:-.01em}.xb-benefit p{color:var(--text-secondary);line-height:1.65;font-size:var(--text-sm);margin:.6rem 0 0}.xb-protocol{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:1.5rem;align-items:start}.xb-protocol-copy p{color:var(--text-secondary);line-height:1.7;margin:0 0 1rem;max-width:58ch}.xb-protocol-copy p:last-child{margin-bottom:0}.xb-protocol-copy code{font-family:var(--font-mono);font-size:.85em;background:var(--canvas-bg);padding:1px 5px;border-radius:4px}.xb-protocol-copy a{color:var(--primary);text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--primary) 45%,transparent);text-underline-offset:3px}.xb-protocol-copy a:hover{text-decoration-color:currentColor}.xb-exchange{margin:0;background:radial-gradient(var(--canvas-dot) 1px,transparent 1px) 0 0 /14px 14px,var(--canvas-bg);border:1px solid var(--hairline);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:1.25rem 1.5rem;font-family:var(--font-mono);font-size:.78rem;line-height:1.75;color:var(--text-primary);overflow-x:auto}.xb-exchange .lbl{color:var(--text-muted);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:.5rem}.xb-exchange .lbl--rule{margin-top:.75rem;border-top:1px solid var(--hairline);padding-top:.75rem}.xb-exchange .ok{color:var(--text-success)}.xb-exchange .dim{color:var(--text-muted)}.xb-exchange .verb{color:var(--primary)}.xb-steps{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:1rem}.xb-step{background:var(--ink-panel);border:1px solid var(--hairline);border-radius:12px;box-shadow:var(--shadow-sm);padding:1.1rem 1.5rem;display:flex;gap:1.25rem;align-items:flex-start}.xb-step .no{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.1em;color:var(--primary);font-weight:700;flex-shrink:0;padding-top:2px}.xb-step p{margin:0;color:var(--text-secondary);line-height:1.6;font-size:var(--text-sm)}.xb-step p b{color:var(--text-primary);font-weight:600}